/*
* Copyright (c) 2004-2010 The Trustees of Indiana University and Indiana
* University Research and Technology
* Corporation. All rights reserved.
* Copyright (c) 2004-2011 The University of Tennessee and The University
* of Tennessee Research Foundation. All rights
* reserved.
* Copyright (c) 2004-2005 High Performance Computing Center Stuttgart,
* University of Stuttgart. All rights reserved.
* Copyright (c) 2004-2005 The Regents of the University of California.
* All rights reserved.
* Copyright (c) 2006-2013 Los Alamos National Security, LLC.
* All rights reserved.
* Copyright (c) 2009-2012 Cisco Systems, Inc. All rights reserved.
* Copyright (c) 2011 Oak Ridge National Labs. All rights reserved.
* Copyright (c) 2013-2020 Intel, Inc. All rights reserved.
* Copyright (c) 2015 Mellanox Technologies, Inc. All rights reserved.
* Copyright (c) 2019 IBM Corporation. All rights reserved.
* Copyright (c) 2021-2025 Nanook Consulting All rights reserved.
* $COPYRIGHT$
*
* Additional copyrights may follow
*
* $HEADER$
*
*/
#include <pthread.h>
#include <stdbool.h>
#include <stdio.h>
#include <stdlib.h>
#include <time.h>
#include <unistd.h>
#include <libgen.h>
#include <pmix.h>
int main(int argc, char **argv)
{
pmix_proc_t myproc;
int rc, ret;
pmix_value_t *val = NULL;
uint32_t nprocs;
pmix_proc_t proc, *parray = NULL;
pmix_info_t *results = NULL, info[3];
size_t nresults, cid, n, m, psize = 0;
pmix_data_array_t dry;
char hostname[1024];
gethostname(hostname, 1024);
/* init us */
if (PMIX_SUCCESS != (rc = PMIx_Init(&myproc, NULL, 0))) {
fprintf(stderr, "Client ns %s rank %d: PMIx_Init failed: %s\n", myproc.nspace, myproc.rank,
PMIx_Error_string(rc));
exit(1);
}
fprintf(stderr, "Client ns %s rank %d: Running on host %s\n", myproc.nspace, myproc.rank, hostname);
PMIX_PROC_CONSTRUCT(&proc);
PMIX_LOAD_PROCID(&proc, myproc.nspace, PMIX_RANK_WILDCARD);
/* get our job size */
if (PMIX_SUCCESS != (rc = PMIx_Get(&proc, PMIX_JOB_SIZE, NULL, 0, &val))) {
fprintf(stderr, "Client ns %s rank %d: PMIx_Get job size failed: %s\n", myproc.nspace,
myproc.rank, PMIx_Error_string(rc));
goto done;
}
nprocs = val->data.uint32;
PMIX_VALUE_RELEASE(val);
if (nprocs < 6) {
if (0 == myproc.rank) {
fprintf(stderr, "This example with add-members requires a minimum of 6 processes\n");
}
exit(1);
}
fprintf(stderr, "Client %s:%d job size %u\n", myproc.nspace, myproc.rank, nprocs);
/* call fence to sync */
PMIX_PROC_CONSTRUCT(&proc);
PMIX_LOAD_PROCID(&proc, myproc.nspace, PMIX_RANK_WILDCARD);
if (PMIX_SUCCESS != (rc = PMIx_Fence(&proc, 1, NULL, 0))) {
fprintf(stderr, "Client ns %s rank %d: PMIx_Fence failed: %d\n", myproc.nspace, myproc.rank,
rc);
goto done;
}
/* rank=0 and 3 bootstrap a new group */
if (0 == myproc.rank || 3 == myproc.rank) {
fprintf(stderr, "%d executing Group_construct\n", myproc.rank);
PMIX_INFO_LOAD(&info[0], PMIX_GROUP_ASSIGN_CONTEXT_ID, NULL, PMIX_BOOL);
// two procs are performing the bootstrap
n = 2;
PMIX_INFO_LOAD(&info[1], PMIX_GROUP_BOOTSTRAP, &n, PMIX_SIZE);
PMIX_DATA_ARRAY_CONSTRUCT(&dry, 1, PMIX_PROC);
parray = (pmix_proc_t*)dry.array;
if (3 == myproc.rank) {
fprintf(stderr, "[%u]: Adding members\n", myproc.rank);
PMIX_LOAD_PROCID(&parray[0], myproc.nspace, 4);
} else {
fprintf(stderr, "[%u]: Adding members\n", myproc.rank);
PMIX_LOAD_PROCID(&parray[0], myproc.nspace, 5);
}
PMIX_INFO_LOAD(&info[2], PMIX_GROUP_ADD_MEMBERS, &dry, PMIX_DATA_ARRAY);
PMIX_DATA_ARRAY_DESTRUCT(&dry);
rc = PMIx_Group_construct("ourgroup", &myproc, 1, info, 3, &results, &nresults);
if (PMIX_SUCCESS != rc) {
fprintf(stderr, "Client ns %s rank %d: PMIx_Group_construct failed: %s\n",
myproc.nspace, myproc.rank, PMIx_Error_string(rc));
goto done;
}
} else if (4 == myproc.rank || 5 == myproc.rank) {
fprintf(stderr, "%d executing Group_construct\n", myproc.rank);
fflush(stderr);
rc = PMIx_Group_construct("ourgroup", NULL, 0, NULL, 0, &results, &nresults);
if (PMIX_SUCCESS != rc) {
fprintf(stderr, "Client ns %s rank %d: PMIx_Group_construct failed: %s\n",
myproc.nspace, myproc.rank, PMIx_Error_string(rc));
goto done;
}
}
fprintf(stderr, "%d GROUP CONSTRUCT COMPLETE\n", myproc.rank);
fflush(stderr);
if (0 == myproc.rank || 3 == myproc.rank ||
4 == myproc.rank || 5 == myproc.rank) {
/* we should have a single results object */
if (NULL != results) {
cid = 0;
for (n=0; n < nresults; n++) {
if (PMIX_CHECK_KEY(&results[n], PMIX_GROUP_CONTEXT_ID)) {
PMIX_VALUE_GET_NUMBER(rc, &results[n].value, cid, size_t);
fprintf(stderr, "%d Group construct complete with status %s KEY %s CID %lu\n",
myproc.rank, PMIx_Error_string(rc), results[n].key, (unsigned long) cid);
} else if (PMIX_CHECK_KEY(&results[n], PMIX_GROUP_MEMBERSHIP)) {
parray = (pmix_proc_t*)results[n].value.data.darray->array;
psize = results[n].value.data.darray->size;
fprintf(stderr, "[%u] NUM MEMBERS: %u MEMBERSHIP:\n", myproc.rank, (unsigned)psize);
for (m=0; m < psize; m++) {
fprintf(stderr, "\t%s:%u\n", parray[m].nspace, parray[m].rank);
}
}
}
} else {
fprintf(stderr, "%d Group construct complete, but no results returned\n", myproc.rank);
}
if (NULL == parray) {
fprintf(stderr, "%d NULL proc array\n", myproc.rank);
goto done;
}
fprintf(stderr, "%d Executing group fence\n", myproc.rank);
PMIX_PROC_CONSTRUCT(&proc);
PMIX_LOAD_PROCID(&proc, "ourgroup", PMIX_RANK_WILDCARD);
if (PMIX_SUCCESS != (rc = PMIx_Fence(&proc, 1, NULL, 0))) {
fprintf(stderr, "Client ns %s rank %d: PMIx_Fence failed: %d\n", myproc.nspace, myproc.rank,
rc);
goto done;
}
fprintf(stderr, "%d executing Group_destruct\n", myproc.rank);
rc = PMIx_Group_destruct("ourgroup", NULL, 0);
if (PMIX_SUCCESS != rc) {
fprintf(stderr, "Client ns %s rank %d: PMIx_Group_destruct failed: %s\n", myproc.nspace,
myproc.rank, PMIx_Error_string(rc));
goto done;
}
}
done:
/* finalize us */
fprintf(stderr, "Client ns %s rank %d: Finalizing\n", myproc.nspace, myproc.rank);
if (PMIX_SUCCESS != (ret = PMIx_Finalize(NULL, 0))) {
fprintf(stderr, "Client ns %s rank %d:PMIx_Finalize failed: %s\n", myproc.nspace,
myproc.rank, PMIx_Error_string(ret));
rc = ret;
} else {
fprintf(stderr, "Client ns %s rank %d:PMIx_Finalize successfully completed\n",
myproc.nspace, myproc.rank);
}
fprintf(stderr, "%s:%d COMPLETE\n", myproc.nspace, myproc.rank);
fflush(stderr);
return (rc);
}